2017 MERCEDES-BENZ SLC-Class Problems

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Complaints Reported

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Complaints by Component

UNKNOWN OR OTHER

1 complaint

On September 6, 2025 while driving approximately 70 mph, the front roof panel of my vehicle detached completely. This was not only a costly failure, but also an extremely dangerous incident that could easily have caused severe injuries or fatalities — either to myself, my passengers, or other motorists on the roadway. As you are aware, Mercedes-Benz has already acknowledged this precise risk through NHTSA Recall No. 21V197000 / Campaign 2021070010, later expanded under NHTSA Recall 23V854000. These documents confirm that the bonding adhesive used on the front roof panel can deteriorate, leading to detachment. Mercedes has therefore had prior knowledge of this defect and its associated safety hazards. Given that my vehicle has now experienced the exact failure described in these recalls, it is wholly unreasonable for Mercedes-Benz to deny responsibility. This was not normal wear and tear; it was a known, documented safety defect that could have resulted in catastrophic consequences.

Oct 09, 2025

ENGINE

1 complaint

Piston 1 broken at 76000 miles. Compleat engine failer

May 15, 2024

ELECTRICAL SYSTEM,COMMUNICATION

1 complaint

TL* THE CONTACT OWNS A 2017 MERCEDES-BENZ SLC300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 21V058000 (COMMUNICATION, ELECTRICAL SYSTEM) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS NOT YET AVAILABLE. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF HILTON HEAD (155 FORDING ISLAND RD, BLUFFTON, SC 29910) WHERE THE CONTACT WAS INFORMED THAT THE UPDATE WAS NOT YET AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE AND CONFIRMED THE INFORMATION PROVIDED BY THE DEALER. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.

May 10, 2021

4.2/5.0

101 reviews

Frequently Asked Questions

How many problems does the 2017 MERCEDES-BENZ SLC-Class have?

The 2017 MERCEDES-BENZ SLC-Class currently has 3 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2017 MERCEDES-BENZ SLC-Class?

The most common problems reported for the 2017 MERCEDES-BENZ SLC-Class are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2017 MERCEDES-BENZ SLC-Class problem data come from?

All problem and complaint data for the 2017 MERCEDES-BENZ SLC-Class comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.